Hello! > /proc/sys/net/ipv4/conf/<ifname>/hidden - BOOLEAN > Hide addresses attached to this device from another devices. ^^^^^^^^^^^^^^^^ If you do not want to use this address at all, just do not configure it. 8) Seriously, you can: 1. Configure it on loopback. 2. Or configure alias on Wan0 with address, which you desire to use and route to internet through this alias. 3. Or set link scope on this address with ip addr add <bad address> scope link dev Wan0 then it will be used only to communicate to provider. 4. Or... lots of ways, provided some fantasy applied. 8) Alexey - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.rutgers.edu